Contamination monitoring system 239-1F

flowmedicalon casters

The Model 239-1F Floor Monitor is a gas proportional floor monitor detector mounted on a roll-around cart. The instrument features a flow system, quick-connects, a gas bottle mount, and a means to adjust the height of the detector from the floor for optimum performance. A nuclear counting gas bottle, gas regulator, and a survey instrument are required for the operation of the floor monitor. See the Available Configurations tab for a list of compatible meters. Features 594 cm2 or 821 cm2 Active Area Gas Proportional Detector Adjustable Detector Height Compatible with Multiple Survey Meters Specifications Indicated Use - Floor monitoring for alpha, beta, and gamma Detector - Gas proportional Recommended Counting Gas - P-10 (10% methane; 90% argon) Cylinder Size (D x H) - Will hold a cylinder 15.2 cm x 48.3 cm (6 x 19 in.) or smaller (Linde size “Q”, Matheson size 3, Airgas size “R”) Window - 0.8 mg/cm2 aluminized Mylar (window thicknesses of 0.4, 3.9, or 7.9 mg/cm2 are available). See configuration table for active and open areas. Efficiency - 239Pu: 17% 90Sr/90Y: 25% Gamma: < 1% Gas Recharge - Will operate on static charge for 2 hours Detector Height - Adjustable from 0.32 to 7.6 cm (0.125 to 3 in.) from surface Detector Operating Voltage - Alpha: Typically 1000 to 1200 V Beta-Gamma: Typically 1600 to 1800 V Threshold - Typically 2 to 4 mV Flow Meter - In: Adjustable from 0 to 100 cc/min Out: Flow indicator from 0 to 100 cc/min Gas Connectors - Double-end quick disconnect for 0.6 cm (0.25 in.) OD tubing Gas Consumption - Typically 50 cc/min Construction - Detector: Anodized aluminum housing with stainless steel hex protective screen (79% open)